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rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 2727 jiffies s: 13001 root: 0x1/. rcu: blocking rcu_node structures (internal RCU debug): Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 6185 Comm: syz.2.675 Not tainted 6.1.106-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 RIP: 0010:strlen+0x2d/0x60 lib/string.c:495 Code: 56 41 54 53 49 89 fe 48 c7 c0 ff ff ff ff 49 bf 00 00 00 00 00 fc ff df 48 89 fb 49 89 c4 48 89 d8 48 c1 e8 03 42 0f b6 04 38 <84> c0 75 12 48 ff c3 49 8d 44 24 01 43 80 7c 26 01 00 75 dd eb 13 RSP: 0018:ffffc90000006b78 EFLAGS: 00000802 RAX: 0000000000000006 RBX: ffffffff8b0d15a9 RCX: 000000008b0d1500 RDX: ffffffff81b03f44 RSI: ffffffff8d32afc0 RDI: ffffffff8b0d15a0 RBP: ffffc90000006cb0 R08: dffffc0000000000 R09: fffffbfff1d33a7e R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000008 R13: ffffffff81b03f44 R14: ffffffff8b0d15a0 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020100000 CR3: 000000004ca74000 CR4: 00000000003506f0 DR0: 0000000020000300 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: <NMI> </NMI> <IRQ> trace_event_get_offsets_lock include/trace/events/lock.h:50 [inline] perf_trace_lock+0x10c/0x440 include/trace/events/lock.h:50 trace_lock_release include/trace/events/lock.h:69 [inline] lock_release+0x995/0xa20 kernel/locking/lockdep.c:5673 rcu_lock_release include/linux/rcupdate.h:355 [inline] rcu_read_unlock include/linux/rcupdate.h:824 [inline] __perf_event_output kernel/events/core.c:7707 [inline] perf_event_output_forward+0x2c0/0x330 kernel/events/core.c:7716 __perf_event_overflow+0x45e/0x640 kernel/events/core.c:9462 perf_swevent_hrtimer+0x38e/0x4f0 kernel/events/core.c:10870 __run_hrtimer kernel/time/hrtimer.c:1686 [inline] __hrtimer_run_queues+0x5a7/0xe50 kernel/time/hrtimer.c:1750 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1812 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline] __sysvec_apic_timer_interrupt+0x156/0x580 arch/x86/kernel/apic/apic.c:1112 sysvec_apic_timer_interrupt+0x3e/0xb0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653 RIP: 0010:__kernel_text_address+0x1b/0x40 kernel/extable.c:79 Code: b9 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 53 48 89 fb e8 37 00 00 00 85 c0 0f 95 c0 48 c7 c1 00 f0 da 8f 48 39 cb 0f 93 c1 <48> c7 c2 48 8c f0 8f 48 39 d3 0f 92 c2 20 ca 08 c2 0f b6 c2 5b c3 RSP: 0018:ffffc90000007530 EFLAGS: 00000287 RAX: 0000000000000001 RBX: ffffffff81785aa3 RCX: ffffffff8fdaf000 RDX: dffffc0000000000 RSI: ffffc90000000000 RDI: ffffffff81785aa3 RBP: ffffc900000075f0 R08: ffffc900000075f0 R09: ffffc900000075b0 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888058c08000 R13: ffffffff81785b50 R14: dffffc0000000000 R15: 1ffff92000000eb5 unwind_get_return_address+0x49/0x80 arch/x86/kernel/unwind_orc.c:323 arch_stack_walk+0xf3/0x140 arch/x86/kernel/stacktrace.c:26 stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:52 kasan_save_free_info+0x27/0x40 mm/kasan/generic.c:516 ____kasan_slab_free+0xd6/0x120 mm/kasan/common.c:236 kasan_slab_free include/linux/kasan.h:177 [inline] slab_free_hook mm/slub.c:1724 [inline] slab_free_freelist_hook mm/slub.c:1750 [inline] slab_free mm/slub.c:3661 [inline] kmem_cache_free+0x292/0x510 mm/slub.c:3683 tcp_write_queue_purge+0x132/0x2f0 net/ipv4/tcp.c:3099 tcp_done_with_error+0x3d/0xc0 net/ipv4/tcp_input.c:4366 tcp_write_err net/ipv4/tcp_timer.c:70 [inline] tcp_write_timeout net/ipv4/tcp_timer.c:273 [inline] tcp_retransmit_timer+0x12ca/0x2800 net/ipv4/tcp_timer.c:547 tcp_write_timer+0x12e/0x280 net/ipv4/tcp_timer.c:676 call_timer_fn+0x1ad/0x6b0 kernel/time/timer.c:1504 expire_timers kernel/time/timer.c:1549 [inline] __run_timers+0x67c/0x890 kernel/time/timer.c:1820 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1833 handle_softirqs+0x2ee/0xa40 kernel/softirq.c:571 __do_softirq kernel/softirq.c:605 [inline] invoke_softirq kernel/softirq.c:445 [inline] __irq_exit_rcu+0x157/0x240 kernel/softirq.c:654 irq_exit_rcu+0x5/0x20 kernel/softirq.c:666 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1106 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653 RIP: 0010:__folio_memcg+0xa2/0x160 include/linux/memcontrol.h:388 Code: ff 49 f7 07 00 02 00 00 0f 85 9c 00 00 00 41 f6 c6 01 0f 85 a3 00 00 00 41 f6 c6 02 0f 85 aa 00 00 00 49 83 e6 fc 4c 89 f0 5b <41> 5c 41 5e 41 5f c3 4c 89 f8 48 c1 e0 34 75 a4 4c 89 ff be 08 00 RSP: 0018:ffffc90004927280 EFLAGS: 00000286 RAX: ffff888140058000 RBX: ffffea0001c8b9c8 RCX: ffffffff81e916f3 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffea0001c8b9c0 RBP: ffffea0001c8b901 R08: dffffc0000000000 R09: fffff94000391739 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: 0000000000000000 R14: ffff888140058000 R15: ffffea0001c8b9c0 folio_memcg_unlock mm/memcontrol.c:2161 [inline] unlock_page_memcg+0x3d/0xb0 mm/memcontrol.c:2166 page_remove_rmap+0x819/0xed0 mm/rmap.c:1462 zap_pte_range mm/memory.c:1453 [inline] zap_pmd_range mm/memory.c:1574 [inline] zap_pud_range mm/memory.c:1603 [inline] zap_p4d_range mm/memory.c:1624 [inline] unmap_page_range+0x1217/0x2740 mm/memory.c:1645 unmap_vmas+0x48b/0x640 mm/memory.c:1730 exit_mmap+0x252/0x9f0 mm/mmap.c:3227 __mmput+0x115/0x3c0 kernel/fork.c:1199 exit_mm+0x226/0x300 kernel/exit.c:565 do_exit+0x9f6/0x26a0 kernel/exit.c:858 do_group_exit+0x202/0x2b0 kernel/exit.c:1021 get_signal+0x16f7/0x17d0 kernel/signal.c:2870 arch_do_signal_or_restart+0xb0/0x1a10 arch/x86/kernel/signal.c:871 exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:174 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline] syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:303 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f7ba1979ef9 Code: Unable to access opcode bytes at 0x7f7ba1979ecf. RSP: 002b:00007f7ba27d7038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: 0000000000000004 RBX: 00007f7ba1b15f80 RCX: 00007f7ba1979ef9 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000000020000100 RBP: 00007f7ba19e793e R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f7ba1b15f80 R15: 00007ffc560e7738 </TASK>
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2024/08/28 18:29 | linux-6.1.y | ee5e09825b81 | ef3de9e8 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-perf | INFO: rcu detected stall in tcp_write_timer | ||
2024/08/03 17:11 | linux-6.1.y | 48d525b0e463 | 1786a2a8 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-perf | INFO: rcu detected stall in tcp_write_timer | ||
2024/08/03 14:21 | linux-6.1.y | 48d525b0e463 | 1786a2a8 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-perf | INFO: rcu detected stall in tcp_write_timer | ||
2024/07/26 10:37 | linux-6.1.y | c18e82d3ee44 | 3f86dfed | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-perf | INFO: rcu detected stall in tcp_write_timer | ||
2024/07/21 13:41 | linux-6.1.y | 9b3f9a5b12dc | b88348e9 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-perf | INFO: rcu detected stall in tcp_write_timer | ||
2024/06/21 02:49 | linux-6.1.y | eb44d83053d6 | dac2aa43 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-perf | INFO: rcu detected stall in tcp_write_timer |